File recording with Caspar 2.3 (Broadcast) Examples

Here you can find examples how to create broadcast MXF or mp4 files with Caspar 2.3.
Because there is a newer version of FFmpeg in this build, the recording commands are different then
with earlier versions.
Also if no extented options are used you get 8 channels audio, with yuv 444 coding…
The recorded files need to be compatible with Adobe Premiere
NOTE, CasparCG 2.3 always writes one multichannel audio stream, in vlc player you can’t select a single channel.
Premiere handles this without any problem.

settings in CasparCG config in the part…

1080i5000
matrix or
stereo

Examples… tested 13-8-2020

Broadcast XDcam EX 35 PAL 50i (1080i50) YUV420 HD stereo recording

ADD 1 FILE “Test stereo feed.mxf” -b:v 35000000 -codec:a pcm_s24le -codec:v mpeg2video -filter:v interlace,zscale=rangein=full:range=limited:primaries=709:transfer=709:matrix=709,format=yuv420p -alternate_scan:v 1 -g:v 12 -bf:v 2 -minrate:v 35000k -maxrate:v 35000k -color_primaries:v bt709 -color_trc:v 1 -colorspace:v 1 -filter:a pan=stereo|c0=c0|c1=c1

Broadcast XDcam EX 35 PAL 50i (1080i50) YUV420 HD multichannel recording
with 4 audio channels

ADD 1 FILE “Test2 4ch audio.mxf” -b:v 35000000 -codec:a pcm_s24le -codec:v mpeg2video -filter:v interlace,zscale=rangein=full:range=limited:primaries=709:transfer=709:matrix=709,format=yuv420p -alternate_scan:v 1 -g:v 12 -bf:v 2 -minrate:v 35000k -maxrate:v 35000k -color_primaries:v bt709 -color_trc:v 1 -colorspace:v 1 -filter:a pan=4c|c0=c0|c1=c1|c2=c3|c3=c3

here in de last part mapping of the audio channels
pan=4c|c0=c0|c1=c1|c2=c3|c3=c3
for 8 channels use
pan=8c|c0=c0|c1=c1|c2=c3|c3=c3|c4=c4|c5=c5|c6=c6|c7=c7

Broadcast XDcam HD50 PAL 50i (1080i50) YUV422 HD stereo (from multichannel input)

ADD 1 FILE “Test 422.mxf” -b:v 50000000 -codec:a pcm_s24le -codec:v mpeg2video -filter:v interlace,zscale=rangein=full:range=limited:primaries=709:transfer=709:matrix=709,format=yuv422p -alternate_scan:v 1 -g:v 12 -bf:v 2 -minrate:v 50000k -maxrate:v 50000k -color_primaries:v bt709 -color_trc:v 1 -colorspace:v 1 -filter:a pan=stereo|c0=c0|c1=c1

Broadcast XDcam HD50 PAL 50i (1080i50) YUV422 HD 4 channel audio (from multichannel input)

ADD 1 FILE “Test 422.mxf” -b:v 50000000 -codec:a pcm_s24le -codec:v mpeg2video -filter:v interlace,zscale=rangein=full:range=limited:primaries=709:transfer=709:matrix=709,format=yuv422p -alternate_scan:v 1 -g:v 12 -bf:v 2 -minrate:v 50000k -maxrate:v 50000k -color_primaries:v bt709 -color_trc:v 1 -colorspace:v 1 -filter:a pan=4c|c0=c0|c1=c1|c2=c3|c3=c3

MP4 recording examples follow soon, right now mp4 files from CasparCG 2.3 can’t be opened by Premiere…

7 Likes

Thanks. Looking forward for H264 examples. I have tested on 2.3 LTS 1080i5000 stereo configuration and after few seconds recoring is broken (speed is doubled). HW is fine. CPU 30% GPU 10%. Have you experienced that issue? I have not found any format working on 1080i5000. Works well only on 1080p2500.

This is a long pending issue. It needs to be solved.

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